iOS 5.1 magically adds 4G to your AT&T iPhone

If you've updated your AT&T iPhone to iOS 5.1, you may have noticed that the signal indicator in the top-left now reads 4G instead of 3G. Do you feel faster?

Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/71IlBVBFSqg/story01.htm

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